Comp. Models of the Mind III b Flashcards Preview

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Flashcards in Comp. Models of the Mind III b Deck (15):
1

Assumptions at work in process/task models?

- activity consists of tasks performed in pursuit of goals
- hierarchical task descriptions
- plans as conditions for combining tasks

2

Two ways in which task descriptions in process/task models can be seen as hierarchical:

- Goals are held in a stack (push & pop operations)
- Goals can be broken into subgoals, which can be broken into tasks

3

Critique of process/task models:

task models are engineering approximations:
- do they actually describe how human cognition works?
- > do they need to? (Marr's levels)
- do they describe cognitive operations or just actions?

4

What does GOMS stand for?

Goals, Operators, Methods, Selection rules

5

GOMS can be described as ...

... a framework for task analysis of routine (!) cognitive skills!

6

What are examples for routine (!) cognitive tasks that can be analysed by GOMS?

Known tasks
Tasks requiring no problem-solving
e.g. Text editing with a familiar text editor

7

First step in GOMS:

hierarchical task composition

8

What can be said about the step Goals in GOMS?

define desired states and methods available to achieve them

9

What can be said about the step Operators in GOMS?

achieve subgoals:
elementary perceptual, motor or cognitive acts

10

What can be said about the step Methods in GOMS?

achieve goals:
procedures conditional on working memory and world state

11

What can be said about the step Selection in GOMS?

choice btw competing methods:
conflict resolution

12

What does KLM stand for?

Keystroke-Level Model

13

What is KLM an example of?

Of a GOMS model.

14

What is the result of a KLM?

prediction time = sum of contributions

15

What does CMN in CMN-GOMS stand for?

Cognitive Perceptual Motor